Operational experience shows that a quite large number of aircraft engines are taken out from service due to inter-shaft bearing failures. The main causes of their failure can be a violation of lubrication and cooling conditions under various operating conditions. The article presents the methodology of estimating the durability of the inter-shaft bearing taking into account the rotor bending vibrations and the experimental studies’ results. Due to the imbalance of the rotor, its shaft makes an oscillating process. Since the oil drive through which the oil is supplied to lubricate the inter-shaft bearing is located inside the shaft, it is also involved in the oscillating process. This increases the rotor vibration level and reduces the oil flow through the oil drive. In addition, the durability of the bearing is affected by its temperature level. Vibration and increased bearing temperature generally have a negative effect on bearing durability.
Estimating the Operability of the Gas Turbine Engine Inter-Shaft Bearing
Lect.Notes Mechanical Engineering
Proceedings of 10th International Conference on Recent Advances in Civil Aviation ; Chapter : 5 ; 51-64
2022-10-20
14 pages
Article/Chapter (Book)
Electronic Resource
English
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